GMC Customer Service Advice Help: Hello all, I am looking for advice to help resolve a customer service iss...

I am looking for advice to help resolve a customer service issue I am having with GMC. Specifically I am looking to learn if there is an appeal point of contact that I could speak with over a current issue I am having. I have a 2013 GMC Yukon Denali Hybrid (less than 3 years old, but currently at 75,000 miles so it is out of the standard warranty). On one of my many 1,200 mile trips down I-5 from Washington to southern California, as I was passing through Roseburg, OR my factory transmission cooler line failed from a manufacturing defect, and I lost all my transmission fluid. The good news was that I noticed the problem before losing all the fluid (by the smoke in my rear view mirror as the fluid hit the exhaust system) and was able to get to the shoulder and eventually towed to the GMC dealer. The bad news is that I was stranded with the family and dog, and had to make al...